Drill



UNiTED STATES PATENT OFFICE.

THORVALD GOSERND, OF STURGEOBT BAY, VVISCONSI.

DRILL.

SPECIFICATION forming' pa; of Letters Patent No. 394,169, dated December 11, 1888.

Application filed September 21, 1888. Serial No. 285,981. (No model.)

To aZZ wwm it may concern:

Be it` known that I, THORWALD GosERND, a citizen of the 'United States, residing' at Sturg'eon Bay, in the county of Door and State of \Visconsin, have invented a new and useful llnproveinent in Drills, of which the following' is a specification.

The object of this invention is to provide a simple, cheap, stron g, and du rable drill, which may he used either for dril lin g in wood or iron; and it consists in a certain novel construction and combination of devices, fully described hereinafter in connection with the accompanying' drawing's, and specifically pointed out in the appcnded claims.

l'n the drawings, Figure l. is a side view of the iinproved drill. Fig'. 2 is a central sectional view of the same. Fig. 3 is a detail view of the lower end of the shaft. Fig. 4. is a plan view of the socket. Fig'. is a detail view of the spring-pawl.

Referrin;Y by letter' to the drawngs, A desig'nates the twisted or worm shaft, (which may be forined hytwisting' a square bar of metah) the upper end of which is provided with a spindle, B, having' a collar, (i, at its lower end.

D represents the head or shield, to which is attached adepcndin;r socket or bearing', E, in which is swi'veled the spindle l on the upper end of the shaft. A nut, F, is adjusted on the upper threaded extreinity of the spindle and bears on a washer, f, whereby the shaft is allowed free rotarv nlotion independent of the head or shield. The collar at the lower end of the spindle l bears against the lower end of the socket or bearing E.

The twisted or worm shaft is provided at .its lower end with a rigid collar, G, below which is forlned a round extension, ll, having a peripheral groove, 71, a short distance from its lower end, and I represents a ring, which fits snugl)v in the said groove fiush with the surface of the extension and rotates freely therein. The upper end of the extension close under the collar G is provided with a ratchet, K.

L represents the hit socket or stock, in the lower end of which is fitted the bit M, of any suitable kind, and N rcpresents a set-screw, which is niounted in a thrcaded aperture in the side of the socket or stock, and when tightened bears against t-he side of the hit to clainp it in place. The upper cnd of the socket 01' stock fits on the extension and hears against the lower side of the collar G, and the bore of the socket or stock is provided at the upper extrelnity with an enla-rg'crnent, which fits around the ratehct, and in which is secured the spring-pawl P, which cng'ag'es the ratchct. This pawl consists of a circular flat spring, p, which extends around the bore of the socket or stock in its enlarg'cinent, and the cnlarg'ed head p' on the free end of the spring:

Screws Q Q are arrang'ed in thrcaded apertures in the side of the socket or stock, and engage registering-depressions R R in the ring' I, whereby the socket or stock rotates with the ring and is held therehy in position on the shaft. A set-serew, S, in the side of the socket rstock imping'es at its inner end (when tightened) against the side of the extension between the ring' and the ratchet and locks the socket or stock rigidly to the extension.

The operation of the ilnproved drill is as follows: "hen the handle or sleeve T, which iits snug'ly on the shaft of the drill and is provided with a twisted or worin horc, is inoved longitudinally along the shaft without being' permitted to rotatc in the hand, the latter is rotated altcrnately in opposite directions. 'hen the handle or slccve is pnshed toward the socket or stock, the pawl eng'ages the .ratehet and canses the socket or stock to rotate with the shaft in the direction in which a right-hand screw is tightened, thereby causing the bit to cut into the material which is being' bored, and whcn thehandlc or sleeve is inoved in the opposite dircction the shaft is rotatcd in the opposite dircction, the ratchet slips idly over the pawl, and the bit reinains stationary. Thus the hit is only rotated when the handle or slecveis pushcd downward. To withdraw screws, tighten the set-screw S, so as to clanip the bit socket or stock firinly to the shaft, then draw the handle or sleeve upwarl, or toward the head or shield, thereby rotating the socket or stock, and when at the upper end of the shaft release the handle or sleeve and allow it to slip idly to the lower end of the shaft.

IOO

. threaded aperture in the socket or stock and engaging the extension to clainp the same rigidly together, substantially asspeeified.

2. In a. drill, the combination of the twisted or worm shaft having a head swiveled on its upper end, the handle or sleeve sliding on the shaft, the extension at the lower end of the shaft provided with a groove, the ring swiveled in the said groove, and the bit stock or socket mounted on the extension, secured by screws to the said ring, and provided with a. pawl engaging a ratchet on the extension, substantially as speeified.

In a drill, the twisted or worm shaft pro.- vided at its lower end with a collar, G, and 2m extension, H, beyond the collar, provided with a peripheral groove, h, the ring mounted in the groove flushwith the surface of the-extension and provided with sockets B R, the bit socket or stock fitting on the extension and bearing against the lower side of the collar G, the sorews passing through the socket or stock and engaging the sockets R in the ring, the springpawl arrangedV in an enlargement of the bore of the socket or stock and engaging a peripheral ratchet on the extension uni der the collar G, and the handle or sleeve operating on the shaft, substantially as specified.

4. In adrill, the combination of the head or shield provided with a depending socket or bearing, E, the twisted 01' worin shaft provided at its upper end with a spindle, B, mounted in the socket or b earing,and having a eollar at its lower end which bears against the lower end of the socket or bearing, the nut engaging the upper end of the spindle, the bit socket or stock mounted on an extension of the lower end of the shaft, and the pawl engaging a ratchet on the extension, substantially'as specified.

In'testirnony that I elaiin the foregoing as my own I have hereto. affixed niy signature in presence of two, witnesses.

` THORVVALDv Vitnesse/s:

A. D. THoRP, NVM. H. TIMLIN.

Correction in Letters Patent No. 394,169.

It is hereby certified that the name of the patentee in Letters Patent No. 394,1f granted December 11, 1888, for an improvement in Drillsfi7 was erroneonsly wrtt and prnted Thorwald Gosernd, Whereas said name should have been written a' printed Thor'wald Goserud and that said Letters Patent should be read With t] oorreoton therein that the same may conform to the record of the case in the Pate Office.

Signed, oountersigned, and sealed this 8th day of January, A. D. 1889.

[SEAL] D. L. HAWKINS,

Assistant Sec'etary of the I'ntew' Oountersigned:

BENTON J. HALL,

Gomm'issoner of Patents. 

